Today’s Friday History List examines the ten most decisive battles in the history of Western Civilization. These are battles that, by their outcomes, changed the course of events in a very dramatic way. They are listed chronologically:

1776 – Trenton. In the fall of 1776, it looked like the American Revolution had failed. George Washington’s dwindling army seemed on the verge of disintegration, and the British relaxed for the winter, intending on finishing off whatever remained of the rebellion in the spring. Rather than watch his army die, Washington led a surprise attack on his enemy’s forward position in Trenton, New Jersey on Christmas night, 1776. What resulted was a stunning victory over Hessian mercenaries that changed the direction of the war and set the stage for the eventual ejection of the English from their American colonies.

1813 – Leipzig. Napoleon, his army greatly weakened by losses the previous year during the Russian campaign, faced for the first time a combined allied army. At Leipzig Napoleon is defeated and forced to retreat to France; he will abdicate the next year, effectively ending his influence and dramatically shifting the balance of power in Europe.

1864 – Atlanta. The summer of 1864 was the North’s darkest hour, as the bright hopes of springtime campaigns had been ground away to dark disappointment. U.S. Grant’s battles against Robert E. Lee in Virginia had been enormously bloody (over 50,000 new Union casualties) with no end yet in sight. In the South, William Tecumseh Sherman’s army sat outside of Atlanta with little hope of breaking its own deadlock. To the public, and more particularly to prospective voters that year, it looked as if Mr. Lincoln’s war might never end. Confederate President Jefferson Davis did the Union a favor that summer as he replaced the defensive-minded Joseph Johnston with the reckless John Bell Hood. Within weeks Hood had taken massive casualties and was eventually compelled to give up Atlanta. The Union victory there gave the electorate in the North the optimism they needed to reelect Abraham Lincoln, which doomed any Southern hopes for victory. At Atlanta, both the Confederacy and American slavery died forever.

1914 – 1st Marne. One of the reasons Germany welcomed the start of the First World War was their absolute faith in the Von Schlieffen Plan, which they expected to result in the fall of France in no more than six weeks. (Don’t forget that the last time Germany and France fought, in the Franco-Prussian War of 1870-71, the Germans had won a resounding victory.) In August of 1914, in spite of tough resistance from the Belgians and a combined British-French defense, all was on schedule. What the Von Schlieffen Plan didn’t take into account though, was the logistical nightmare of trying to keep rapidly moving troops adequately supplied in a day when most ammunition and provisions were still carried in horse-pulled wagons. Losing confidence, German Chief of Staff Moltke changed the plan in mid-stream and exposed his army to attack. This the French did at the 1st Battle of the Marne. By the first week of September, the German Army had been halted, and both armies began to dig trenches in a line that would eventually extend to the North Sea. A war of rapid movement had suddenly become a nightmare in the trenches.

1940 – Dunkirk. At the end of May 1940, it was clear that the Nazis would conquer France; all that was left to be decided was whether the 400,000 British and French survivors could be evacuated to England, where the fight might go on. If the Germans could have entrapped and destroyed those troops, the Second World War might have ended that spring, as Britain would have had little but the Home Guard with which to defend their island. The evacuation, called Operation Dynamo, was aided by German hesitation and the heroic efforts of those on the thousands of boats that helped in the rescue. In addition, the RAF inflicted serious losses on the Luftwaffe as it harassed the troops on the beach. By the time the effort was called off on June 4, 338,000 men had been taken out of France and the Germans had lost 240 aircraft. Hitler would eventually realize that he could never have England, instead, he turned his attention to the Soviet Union – with disastrous consequences.